How do you use JB Weld extreme heat?

Prepare. Remove dirt, debris or loose contaminants from surface. Use sand paper to roughen. Mix. Open J-B Weld® Extreme Heat™. Thoroughly mix product. Apply. Use product generously, working onto surface or into hole, crack, pit or seam. Dry. Test cure by pressing fingernail or thumbnail into repair material. Click to see full answer. Keeping this in consideration, does JB Weld withstand heat?J-B Weld can withstand a constant temperature of 500 °F (260 °C), and the maximum temperature threshold is approximately 600 °F (316 °C) for 10 minutes. J-B Weld can also be used inside a microwave oven, exposed to microwave radiation instead of infrared radiation (heat).Also Know, how many pounds can JB Weld hold? J-B Weld™ Twin Tube – 2 oz A full cure is reached in 15-24 hours. J-B Weld™ has a tensile strength of 5020 PSI and sets to a hard bond overnight. It can withstand temperatures up to 550ºF when fully cured. In this manner, will JB Weld hold on exhaust manifold? Because of the extreme temperatures of exhaust systems, we do not recommend J-B Weld for use on exhaust manifolds and catalytic converters. However, in areas where the continuous temperature is less than 450º F, we do recommend our HighHeat epoxy putty stick.What is the strongest JB Weld for metal?Than J-B Weld Epoxies. J-B Weld, known as “The Original Cold Weld,” was developed as an alternative to traditional torch welding. It’s designed to be extremely effective in even the harshest environments. Because it’s a two-component (or 2k) epoxy system, it uses reactive chemistry to create the strongest bond possible